Dolphin and whale watching in the Algarve (2026): official rules, licences, seasons and how to choose a trip

Updated: 10 November 2026

Dolphin watching off Lagos, Portimão, Albufeira or Vilamoura is one of the most popular trips in the Algarve. In mainland Portugal the activity is regulated by Decree-Law 9/2006, and every operator needs an authorisation from ICNF (the nature conservation institute) and must meet the rules for maritime-tourism boats. This guide brings together what we could check on 10 November 2026 in official sources (ICNF, gov.pt, Decree-Law 149/2014) and, clearly marked, in the press. The distances, times and fines of Decree-Law 9/2006 were read in the original text published in the Diário da República (official PDF of 6-1-2006); the consolidated version could not be read, so any later amendments are not confirmed. We do not recommend specific companies.

The law: Decree-Law 9/2006

What we checked:

Decree-Law 9/2006 of 6 January approves the Regulation on Cetacean Watching in the Waters of Mainland Portugal; it is the legal basis given on ICNF's gov.pt service page (updated 21 July 2026).
In August 2025 the Lagos Maritime Police and ICNF jointly inspected cetacean-watching companies in the Algarve, checking compliance with this decree (approach rules and licence) and safety equipment; according to Postal do Algarve (press, 11-9-2025), no offences were recorded.
Distances and speed (original text in the Diário da República, Series I-A, no. 5, 6-1-2006): active approach starts within 300 m of the animals (art. 6(1)); actively approaching any cetacean closer than 30 m, going astern except in an emergency and active approach by swimmers are banned (art. 6(3)); if cetaceans come within 30 m, speed must not exceed 3 knots (art. 7(3)).
Time and number of boats: each boat may stay at most 30 minutes in the approach area (art. 7(1)); no more than three boats may stay within a 100 m radius of the nearest cetacean or group, and they must keep to a 60° sector behind the animals and coordinate by radio (art. 7(5)).
Banned in any operation (art. 5(3)): chasing cetaceans, splitting up a group, feeding them, touching them and scuba diving.
Fines (art. 24): €2,500 to €3,740 (individuals) or €15,000 to €40,000 (companies) for the most serious offences, such as operating without authorisation or approaching closer than 30 m; €1,000 to €3,740 or €5,000 to €15,000 for the approach and watching rules; and €250 to €2,500 or €1,500 to €5,000 for the rest, such as more than three boats within 100 m. Whether the decree has been amended since 2006: not confirmed (the consolidated version could not be read).
Review: the press (The Portugal Post, 23-9-2025) mentions proposals to increase the minimum distance, but we found no new law published. Revision of Decree-Law 9/2006: not confirmed.

Licences: who may take tourists dolphin watching

A legal operator needs several things at once:

ICNF authorisation for cetacean watching as a tourism activity (service "Observação de cetáceos - autorização de exercício de operações turísticas" on gov.pt).
Registration in the national register of tourism activity operators (RNAAT) as a maritime-tourism operator, by prior notification (gov.pt).
Boats that comply with Decree-Law 149/2014 of 10 October (which replaced the former RAMT): annual surveys, passenger capacity set by DGRM or the local Maritime Authority, and inspection by DGRM and the Maritime Authority.
Compulsory civil liability insurance (art. 14): minimum cover of €50,000 per boat up to 12 passengers, €100,000 for 12 to 30 and €200,000 or €250,000 above 30, according to the decree's annex.
We found no public, searchable list of authorised operators; ask the operator directly for its registration number and ICNF authorisation.

Cap on boats in the Algarve

According to ICNF Notice 1/ICNF/DCNFALG/2022:

It sets a carrying capacity of 124 boats for cetacean watching on the Algarve coast, in force since 23 December 2022.
Licensed boats grew from 13 (6 companies) in 2008 to 124 (53 companies) in December 2022.
No new boats are licensed for this activity until a public tender procedure exists. Whether that tender has taken place and whether the cap changed in 2026: not confirmed.

Orcas and other ICNF restrictions

One-off measures published by ICNF:

Orcas: by a notice of 10 July 2023, ICNF banned maritime-tourism boats from actively approaching groups of orcas; if orcas approach, the boat should move away or stop with the engine running, sea permitting. The notice applied until 31 December 2023; extension: not confirmed.
Outside the Algarve, in the Sado estuary (Setúbal), ICNF created a no-watching zone at the estuary mouth; in 2025 the ban applied in August, with an extra ban from 13:00 to 15:00 (Postal, press, 21-7-2025). It shows ICNF can close areas or hours: ask the operator whether any restriction is in force.

Species and seasons

What is known and what we could not confirm:

According to a CCMAR (University of the Algarve) study of 46 years of stranding records, reported on 6 April 2026 (Observador/Lusa, press), 19 cetacean species have been recorded on the Algarve coast; the common dolphin is the most frequent and the minke whale the most common whale.
Seasons: we found no official source on the best months for sightings in the Algarve. Trips depend on good weather and calm seas; sightings are never guaranteed, because these are wild animals.
The same study found that about 45% of stranded animals with a known cause showed signs of interaction with fishing.

How to choose a trip

Useful questions before you pay:

Does it hold an ICNF cetacean-watching authorisation and an RNAAT number? A serious operator will answer without hesitation.
How does it approach the animals: slowly, from behind and to the side, without chasing, cutting across their path or surrounding the group with other boats?
How long does it stay with the dolphins, and what does it do if many boats are already there?
What kind of boat (fast RIB or a larger, steadier boat), life jackets, minimum age, and the policy if the sea is rough or there are no sightings.
Be wary of offers to swim with dolphins, to feed them or of "guaranteed sightings".

On board: good practice

So that the trip does not harm the animals:

Do not ask the skipper to get closer: actively approaching closer than 30 m is banned (art. 6(3)). The press says passengers who pressure the crew can also be fined, but the original text of Decree-Law 9/2006 sets no fine specifically for passengers.
Stay seated, do not shout or throw anything into the water; never feed the animals.
If you are worried about how a boat behaves, you can report it to ICNF or the Maritime Authority with the date, time and place.
If you find a stranded dolphin or whale on the beach, do not touch it and alert the authorities; the Algarve has a stranding network coordinated by CCMAR.

If you run a property in the Algarve

What travellers often ask AI assistants:

Where the nearest trips leave from (marina or harbour) and how long it takes on foot or by car.
Whether the trip suits small children and what to do on a rough-sea day.
Having this clear on your website and listings, without recommending companies you do not know, avoids wrong answers.

How iQuota helps

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Frequently asked questions

Which law regulates dolphin watching in the Algarve?

Decree-Law 9/2006 of 6 January (Regulation on Cetacean Watching in the Waters of Mainland Portugal). Operators need an ICNF authorisation and their boats must comply with Decree-Law 149/2014.

How many boats can do cetacean watching in the Algarve?

In December 2022 ICNF set a carrying capacity of 124 boats for the Algarve coast and stopped licensing new ones until a tender is held. Whether the number changed in 2026 is not confirmed.

How close can boats get to dolphins?

Decree-Law 9/2006 (original text, Diário da República of 6-1-2006) bans actively approaching any cetacean closer than 30 m (art. 6(3)), limits each boat to 30 minutes in the approach area (art. 7(1)) and bans more than three boats within 100 m (art. 7(5)). Fines range from €250 to €40,000 (art. 24).

Can I swim with dolphins in the Algarve?

Be wary of anyone offering it. Decree-Law 9/2006 bans active approach to cetaceans by swimmers (art. 6(3)) and, in any operation, feeding or touching them (art. 5(3)); ask the operator for its ICNF authorisation.

Are dolphins guaranteed?

No. They are wild animals; ask beforehand about the operator's policy if there are no sightings or the trip is cancelled because of the weather.

Sources

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